Add build_py_2to3.

1 files changed, 19 insertions, 1 deletions

diff --git a/Doc/distutils/apiref.rst b/Doc/distutils/apiref.rst
index 36684e2..6616f83 100644
--- a/Doc/distutils/apiref.rst
+++ b/Doc/distutils/apiref.rst
@@ -1820,7 +1820,25 @@ This module supplies the abstract base class :class:`Command`.
    :synopsis: Build the .py/.pyc files of a package
 
 
-.. % todo
+.. class:: build_py(Command)
+
+.. class:: build_py_2to3(build_py)
+
+   Alternative implementation of build_py which also runs the
+   2to3 conversion library on each .py file that is going to be
+   installed. To use this in a setup.py file for a distribution
+   that is designed to run with both Python 2.x and 3.x, add::
+
+     try:
+        from distutils.command.build_py import build_py_2to3 as build_py
+     except ImportError:
+        from distutils.command.build_py import build_py
+
+   to your setup.py, and later::
+
+      cmdclass = {'build_py':build_py}
+
+   to the invocation of setup().
 
 
 :mod:`distutils.command.build_scripts` --- Build the scripts of a package